Tonkin Black Crested Gibbon Nomascus concolor ssp. concolor

Tonkin Black Crested Gibbon Nomascus concolor ssp. concolor

Tonkin Black Crested Gibbon Nomascus concolor ssp. concolor

Critically Endangered

Location: China, Vietnam

The Tonkin Black Crested Gibbon lives in subtropical and montane evergreen, semi-evergreen and deciduous forest (Jiang et al. 2006, Fan et al. 2009a) and in China it is restricted to broad-leaved evergreen forests (Fan et al. 2009a).

The species is listed as Critically Endangered based on a suspected population reduction of over 80% in the last 45 years (three generations) and a suspected continuing reduction at the same rate for at least 15 years (one generation) in the future, due primarily to widespread hunting and habitat loss.

The biggest threats to Nomascus concolor throughout its range include destructive local forest use and hunting while selective logging and agriculture encroachment are additional threats (Geissmann et al. 2000, Jiang et al. 2006, Sun et al. 2012, Wei et al. 2017).

IUCN Red List

The Tonkin Black-Crested Gibbon lives in #China and #Vietnam it’s critically endangered on @ICUNredlist due to hunting and #palmoil deforestation. Boycott the brands fuelling their demise #Boycott4Wildlife

In Vietnam, depending on the locality, these gibbons are threatened by mostly human impact on habitat and hunting pressure but it is ultimately always a combination of the two.

These gibbons belong to genus Nomascus. They are known to communicate in species-specific song when defining territory or attracting mates. They sing in regional accents to each other. Males and females have different coloured fur.

Numerous conservation efforts of these rarest of small primates are ongoing. Sponsor a gibbon at a rescue centre here.

Support the conservation of this species

Endangered Primate Rescue Centre

IUCN: Saving Small Apes

Further Information


Pengfei, F., Nguyen, M.H., Roos, C. & Rawson, B.M. 2020. Nomascus concolor ssp. concolor. The IUCN Red List of Threatened Species 2020: e.T160304839A17991381. Downloaded on 28 January 2021.

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Published by Palm Oil Detectives

Hi, I’m Palm Oil Detective’s Editor in Chief. Palm Oil Detectives is partly a consumer website about palm oil in products and partly an online community for writers, artists and musicians to showcase their work and express their love for endangered species. I have a strong voice for creatures great and small threatened by deforestation. With our collective power we can shift the greed of the retail industry and influence big palm oil to stop cutting down forests. Be bold! Be courageous! Join me and stand up for the animals with your art and your supermarket choices!

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